Valved connector assembly and sterility barriers for heat exchange catheters and other closed looped catheters
a technology of valve connectors and valve connectors, which is applied in the field of catheters, can solve the problems of risk of microbial contamination in the blood of patients, and achieve the effect of facilitating rapid connection and disconnection
Inactive Publication Date: 2009-03-31
ZOLL CIRCULATION
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AI Technical Summary
Benefits of technology
Ensures complete deflation of expandable reservoirs and maintains sterility of the catheter, reducing the risk of microbial contamination during repositioning or withdrawal, facilitating safe movement and reuse of the catheter.
Problems solved by technology
If a proximal portion of the catheter has become exposed to room air and possible microbial contamination, further advancement of that portion of the catheter into the patient's vasculature may risk introduction of microbial contamination into the patient's blood.
Method used
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Embodiment Construction
A. A Valved Connector & Sterility Barrier Assembly
[0024]Components and Construction of the Connector & Sterility Barrier Assembly
[0025]FIGS. 1-4c show an example of a valved connector and sterility barrier assembly 10 of this invention attached to one type of closed loop heat exchange catheter 260. The valved connector and sterility barrier assembly 10 comprises a connector portion 11 and a sterility barrier portion 19 which, although shown in combination in this example, may be provided and / or used separately as well.
[0026]The connector portion 11 includes a) a first connector body 12 that is attached to or formed on the ends of a fluid inflow source such as a fluid inflow tube 297 and a fluid outflow receptacle such as a fluid outflow tube 299, b) a second connector body 14 that is connectable to the first connector body 12, c) latches 16 for deterring inadvertent separation or disconnection of the first and second connector bodies 12 and 14 respectively, and d) a catheter inflow ...
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A connector assembly for catheters having closed loop flow circuits, such as some balloon catheters and heat exchange catheters. The connector assembly comprises first and second connector bodies that may be connected and disconnected from one another. When the connector bodies are disconnected, a syringe or negative pressure source may be attached to withdraw residual fluid from the catheter's closed loop circuit and to deflate any expandable portion of the closed loop circuit (e.g., balloon or expandable heat exchanger). A one way flow valve prevents make up air or other fluid from entering the catheter while the negative pressure is being applied. Also disclosed are sterility barrier assemblies for all types of catheters. Such sterility barrier assemblies are operative to prevent contamination of the portion of a catheter that remains outside of a patient's body so that the catheter may subsequently be further advanced into the patient's body without introducing microbes or other contaminants into the patient's body.
Description
FIELD OF THE INVENTION[0001]This invention relates generally to devices and methods for medical treatment and more particularly to catheters that are insertable into the bodies of human or veterinary patients and related methods.BACKGROUND OF THE INVENTION[0002]A. Closed Loop Catheters[0003]The prior art has included numerous “closed loop” catheters having closed loop fluid flow circuits formed within the catheter. Examples of such closed loop catheters include various types of catheters that have a) a first lumen through which a fluid may flow into the catheter body and b) a second lumen through which fluid that has entered the catheter body through the first lumen may subsequently flow out of the catheter body. In some instances, a reservoir (e.g., chamber, vesicle, collector, space, etc.) may be formed on or within the catheter in fluid communication with the fist and second lumens such that fluid infused through the first lumen may collect within the reservoir and may subsequent...
Claims
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IPC IPC(8): A61F7/12A61M5/172A61M5/44
CPCA61F7/12A61B19/38A61F2007/126A61M5/1723A61M5/445A61M25/1002A61M2025/1072A61M2205/36A61B90/40
InventorBLEAM, JEFFEREY C.TSAI, GEORGE
OwnerZOLL CIRCULATION